2001 Ford F150 Owner Guide 4th Printing - Page 234

Maintenance and care 2. Carefully separate the two halves of the air filter housing. 3. Remove the air filter element from the open end of the air filter housing. 4. Install a new air filter element, ensuring the notch on the top half of the air filter housing lines up with the notch on the bottom half of air filter housing. Be careful not to crimp the filter element edges between the air filter housing. This could cause filter damage and allow unmetered air to enter the engine if not properly seated. 5. Replace the two halves of the air filter housing and secure the clamp. WINDSHIELD WIPER BLADES Check the wiper blades at least twice a year or when they seem less effective. Substances such as tree sap and some hot wax treatments used by commercial car washes reduce the effectiveness of wiper blades. Checking the wiper blades If the wiper blades do not wipe properly, clean both the windshield and wiper blades using undiluted windshield wiper solution or a mild detergent. Rinse thoroughly with clean water. To avoid damaging the blades, do not use fuel, kerosene, paint thinner or other solvents. 234